Wall plaque



FIG. 1 is a front elevation of a wall plaque, showing my new design;

FIG. 2 is a right side elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a left side elevation thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

The ornamental design for a wall plaque, as shown.